Home / 20,285.20-30,413.22-13,695.04

Finding the Fourth Proportional to 20,285.20, 30,413.22 and 13,695.04

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Solution

The fourth proportional to 20,285.20, 30,413.22 and 13,695.04 is: 20,532.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.20 : 30,413.22 = 13,695.04 : x
  2. Step 2: Convert to fraction form
    20,285.20/30,413.22 = 13,695.04/x
  3. Step 3: Cross multiply
    20,285.20x = 30,413.22 × 13,695.04
  4. Step 4: Simplify right side
    20,285.20x = 416,510,264.43
  5. Step 5: Solve for x
    x = 416,510,264.43/20,285.20
  6. Step 6: Final answer
    x = 20,532.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.